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Fix PR3325, a miscompilation of invokes by IPSCCP. Patch by Jay Foad!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62244 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1749,8 +1749,7 @@ bool IPSCCP::runOnModule(Module &M) {
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} else {
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for (BasicBlock::iterator BI = BB->begin(), E = BB->end(); BI != E; ) {
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Instruction *Inst = BI++;
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if (Inst->getType() == Type::VoidTy ||
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isa<TerminatorInst>(Inst))
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if (Inst->getType() == Type::VoidTy)
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continue;
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LatticeVal &IV = Values[Inst];
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@ -1766,7 +1765,7 @@ bool IPSCCP::runOnModule(Module &M) {
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Inst->replaceAllUsesWith(Const);
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// Delete the instruction.
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if (!isa<CallInst>(Inst))
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if (!isa<CallInst>(Inst) && !isa<TerminatorInst>(Inst))
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Inst->eraseFromParent();
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// Hey, we just changed something!
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28
test/Transforms/SCCP/2009-01-14-IPSCCP-Invoke.ll
Normal file
28
test/Transforms/SCCP/2009-01-14-IPSCCP-Invoke.ll
Normal file
@ -0,0 +1,28 @@
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; RUN: llvm-as < %s | opt -ipsccp | llvm-dis | grep {ret i32 42}
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; RUN: llvm-as < %s | opt -ipsccp | llvm-dis | grep {ret i32 undef}
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; PR3325
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define i32 @main() {
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%tmp1 = invoke i32 @f()
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to label %UnifiedReturnBlock unwind label %lpad
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lpad:
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unreachable
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UnifiedReturnBlock:
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ret i32 %tmp1
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}
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define internal i32 @f() {
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ret i32 42
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}
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declare i8* @__cxa_begin_catch(i8*) nounwind
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declare i8* @llvm.eh.exception() nounwind
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declare i32 @llvm.eh.selector.i32(i8*, i8*, ...) nounwind
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declare void @__cxa_end_catch()
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declare i32 @__gxx_personality_v0(...)
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